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Mega Backdoor Roth Calculator

Estimate how much after-tax 401(k) money you can convert to Roth each year.

Mega Backdoor Roth Calculator

About this tool

Enter your 401(k) limit status, after-tax contribution amount, employer match, and growth assumption. Get the converted amount, tax drag avoided, and long-term Roth balance. Targets the recurring r/personalfinance and r/financialindependence mega backdoor Roth questions.

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